from collections import Counter

t = int(input())

def check_permutation(ab, n):
    arr_a = Counter(ab)
    arr_b = Counter(n)
    # print(arr_a, arr_b)
    for i in arr_b:
        if i not in arr_a or arr_b[i] != arr_a[i]:
            return False
    for i in arr_a:
        if i not in arr_b or arr_b[i] != arr_a[i]:
            return False
    return True



def check(n, a, b):
    if n == a * b:
        if (len(str(a)) == len(str(b)) and (len(str(b) + str(a)) == len(str(n)))):
            if a % 10 != 0 or b % 10 != 0:
                # array = list(range(10))
                if check_permutation(str(a) + str(b), str(n)):
                    return True
    return False

for i in range(t):
    n, a, b = map(int, input().split())
    print("YES" if check(n, a, b) else "NO")
    # print("YES" if check_permutation(str(a) + str(b), str(n)) else "NO")